870901 has 2 divisors, whose sum is σ = 870902. Its totient is φ = 870900.

The previous prime is 870889. The next prime is 870907. The reversal of 870901 is 109078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 139876 = 855^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 870901 - 2⁷ = 870773 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435450 + 435451.

It is an arithmetic number, because the mean of its divisors is an integer number (435451).

2⁸⁷⁰⁹⁰¹ is an apocalyptic number.

It is an amenable number.

870901 is a deficient number, since it is larger than the sum of its proper divisors (1).

870901 is an equidigital number, since it uses as much as digits as its factorization.

870901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 870901 is about 933.2207670214. The cubic root of 870901 is about 95.4969709299.

Adding to 870901 its reverse (109078), we get a palindrome (979979).

It can be divided in two parts, 870 and 901, that added together give a palindrome (1771).

The spelling of 870901 in words is "eight hundred seventy thousand, nine hundred one".